package org.apache.maven.toolchain;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.HashMap;
import java.util.Map;

import org.apache.maven.toolchain.model.ToolchainModel;
import org.codehaus.plexus.logging.Logger;

/**
 *
 * @author mkleint
 */
public abstract class DefaultToolchain implements Toolchain, ToolchainPrivate {

  private String type;

  private Map<String, RequirementMatcher> provides = new HashMap<String, RequirementMatcher>();

  public static final String KEY_TYPE = "type"; // NOI18N

  private ToolchainModel model;

  private Logger logger;

  protected DefaultToolchain(ToolchainModel model, Logger logger) {
    this.model = model;

    this.logger = logger;
  }

  protected DefaultToolchain(ToolchainModel model, String type, Logger logger) {
    this(model, logger);
    this.type = type;
  }

  public final String getType() {
    return type != null ? type : model.getType();
  }

  public final ToolchainModel getModel() {
    return model;
  }

  public final void addProvideToken(String type, RequirementMatcher matcher) {
    provides.put(type, matcher);
  }

  public boolean matchesRequirements(Map<String, String> requirements) {
    for (Map.Entry<String, String> requirement : requirements.entrySet()) {
      String key = requirement.getKey();

      RequirementMatcher matcher = provides.get(key);

      if (matcher == null) {
        getLog().debug("Toolchain " + this + " is missing required property: " + key);
        return false;
      }
      if (!matcher.matches(requirement.getValue())) {
        getLog().debug("Toolchain " + this + " doesn't match required property: " + key);
        return false;
      }
    }
    return true;
  }

  protected Logger getLog() {
    return logger;
  }
}
